Guide
Suboxone Side Effects: What Is Common, What Is Serious, and the Dental Warning
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Published August 24, 2026
Most people asking about Suboxone side effects are already taking it, and are trying to work out whether what they are feeling is normal, or a reason to stop.
Two things are true at once. The side effects are real and some of them are worth acting on. And stopping buprenorphine on your own is more dangerous than almost any side effect on this page.
What Are the Common Side Effects of Suboxone?
Suboxone is buprenorphine combined with naloxone. The buprenorphine is what does the work; it is a partial opioid agonist, which is why it holds withdrawal off without producing the same high.
The common effects usually settle in the first few weeks:
- headache
- nausea, and sometimes vomiting early on
- constipation, which is the one most likely to persist
- sweating, often more than people expect
- trouble sleeping
- numbness or a burning feeling in the mouth where the film or tablet dissolves
None of those are emergencies. Constipation and sweating are the two that most often make somebody want to quit, and both are usually manageable without stopping the medication.
What Are the Long-Term Side Effects of Suboxone?
Three come up repeatedly in people on maintenance for a year or more.
Dental problems. This one has a formal warning behind it and gets its own section below.
Hormonal changes. Long-term opioid use of any kind, including buprenorphine, can lower testosterone and disrupt menstrual cycles. Low energy, low libido and mood changes are the usual way it shows up, and it is measurable with a blood test rather than something to guess at.
Sleep. Buprenorphine can suppress the deeper stages of sleep. People often report sleeping through the night and still waking unrested.
Liver problems are on the label but are uncommon, and mostly matter for people who already have hepatitis or liver disease. That is a reason for monitoring, not a reason to avoid the medication.
Why Does Suboxone Cause Dental Problems?
Because the film or tablet dissolves in the mouth, and it is acidic.
In January 2022 the FDA issued a safety communication about dental problems with buprenorphine medicines dissolved in the mouth — tooth decay, cavities, oral infections and tooth loss. The cases included people with no history of dental trouble, and some began within two weeks of starting treatment. The FDA added the warning to the prescribing information for every buprenorphine medicine taken this way.
Two things are worth holding together here. The risk is real and was serious enough to change a label. And the FDA’s own conclusion in the same communication is that the benefits of these medicines clearly outweigh the risks.
What that means in practice is a conversation with a dentist and a prescriber about mouth care, not a decision to stop. Anyone on buprenorphine who has not had a dental check since starting is overdue for one.
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Is Suboxone Dangerous?
On its own, and taken as prescribed, buprenorphine has a ceiling effect that makes fatal respiratory depression far less likely than with a full agonist like fentanyl or oxycodone. That ceiling is the reason it is used.
The danger is combination. Buprenorphine with alcohol, or with a benzodiazepine such as Xanax or Klonopin, removes that safety margin, and that combination is where overdoses happen. If you are prescribed both, that is a conversation to have with the prescriber rather than something to manage alone — and if you are drinking on top of it, that is the thing to raise first.
What Is Precipitated Withdrawal?
It is the reason the first dose is timed rather than taken whenever.
Buprenorphine binds more tightly to opioid receptors than most full agonists but activates them less. Take it while a full agonist is still on board and it displaces what is there, dropping someone into abrupt, severe withdrawal within an hour. It is not dangerous in the way alcohol withdrawal is dangerous, but people describe it as the worst hour of the process.
This is why induction is supervised, and why the honest answer to “when can I start” is that it depends on which opioid, how much, and when the last dose was.
Can You Come Off Suboxone?
Yes, and it is a taper rather than a stop.
Buprenorphine has a long half-life, which is helpful day to day and makes withdrawal from it slower and flatter than withdrawal from a short-acting opioid. It also means an abrupt stop produces symptoms that build over days and can run for weeks.
A supervised taper reduces the dose in steps small enough that each one settles before the next. Opiate and opioid detox covers what that looks like medically, and what to expect from our detox covers the admission.
When Is Stopping the Wrong Idea?
When the reason is a side effect that has not been discussed with a prescriber yet.
Constipation, sweating and poor sleep are common reasons people stop on their own, and all three have answers that are not “stop the medication”. The National Institute on Drug Abuse calls treatment with methadone, buprenorphine or naltrexone the standard of care for opioid use disorder, and the risk of returning to fentanyl after stopping is the risk that actually kills people.
If you want off it, the way to do that is planned. If you want to stay on it and feel better, that is usually a dose or a management conversation. Either way the first step is the same, and it is not stopping tonight.
Common Questions
How long do Suboxone side effects last?+–
The common early ones — headache, nausea, sweating — usually ease within two to four weeks as the dose settles. Constipation and sleep changes can persist for as long as someone is taking it, and both are treatable.
Does everyone on Suboxone get dental problems?+–
No. The FDA warning came from case reports, not from a finding that it happens to most people. What it changed is that dental care is now part of the standard conversation rather than an afterthought.
Is it safe to drink alcohol on Suboxone?+–
No, and this is the combination that matters most. Alcohol and buprenorphine both suppress breathing, and together they remove the ceiling effect that makes buprenorphine safer than a full agonist.
Will Suboxone show up on a drug test?+–
Buprenorphine is not detected by a standard five-panel opioid screen but is detected by tests that look for it specifically, which many treatment and employment panels now do. A current prescription is the relevant fact to disclose.
Is being on Suboxone long term the same as still being addicted?+–
No. Physical dependence on a prescribed medication taken as directed is not the same as a use disorder, which is defined by loss of control and harm. That distinction matters because the belief that it is the same is a common reason people stop and relapse.
What if I have already stopped and feel terrible?+–
Withdrawal from buprenorphine builds over days rather than hours, so it often peaks later than people expect. It is not usually medically dangerous on its own, but it is the point at which most returns to use happen, and it is worth getting help with rather than waiting out.
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About the people behind this guide
Anna-Grace Washington
Medical Content Writer
Anna-Grace Washington is a Medical Content Writer for Briarwood Detox Center. She holds a master’s degree in clinical psychology from the University of Texas and brings a strong understanding of behavioral health, addiction recovery, and evidence-based treatment concepts to her writing.
Dr. Robert Ulrich, DO
Medical Director
Dr. Robert Ulrich serves as Medical Director at Briarwood Detox Center, bringing more than two decades of clinical neurology experience to the treatment of substance use disorders. He is board-certified in neurology by the American Board of Psychiatry and Neurology and completed his neurology residency at UT Southwestern Medical Center in Dallas, where he served as Chief Resident.
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